摘要
目的：测定菲牛蛭的耗氧量、耗氧率和窒息点。方法：采用流水式密闭容器,当水温在20.2和30.4℃时,分别测定菲牛蛭幼蛭（平均体重为0.29 g）和成蛭（平均体重为2.89 g）的耗氧量、耗氧率和窒息点。结果：菲牛蛭的耗氧量分别随水温的升高和体重的增加而相应地增加,耗氧率则随体重的增加而降低,呈明显的昼夜变化规律,白天的平均耗氧率高于夜间;窒息点分别随水温的升高和体重的增加而相应地下降。结论：菲牛蛭的耗氧量、耗氧率与其活动密切相关,并受昼夜的影响,在生产中对其投料应选择在上午的6∶00-10∶00或下午的17∶00-19∶00进行;同时,菲牛蛭的耐低氧能力较强,适合高密度或工厂化养殖,也利于长时间活体保存或长距离运输。
Objective： To investigate the oxygen consumption,oxygen consumption rate and asphyxiation point of Poecilobdella manillensis. Methods： Oxygen consumption,oxygen consumption rate and asphyxiation point on juvenile（the average weight of 0. 29 g） and adult leech（the average weight of 2. 89 g） of Poecilobdella manillensis were measured at water temperature conditions of 20. 2 and 30. 4℃ respectively using an airtight container with flowing water. Results： Oxygen consumptions of Poecilobdella manillensis were increased with the increase of temperature and body weight respectively; However,their oxygen consumption rates circadian variation and the average oxygen consumption rate at daytime were higher than those at night. In addition,their asphyxiation point was declined accordingly with the increase of temperature and body weight respectively. Conclusions： Oxygen consumption and oxygen consumption rate of Poecilobdella manillensis were closely associated with their activities and influenced by circadian variation,the preferable feeding time were the period of 6∶ 00 - 10∶ 00 in the morning or 17∶ 00 - 19∶ 00 in the afternoon; Meanwhile,Poecilobdella manillensis had a higher ability of the hypoxia tolerance for high density or factory farming,the long time living preservation and the long distance transport.
出处
《中药材》
CAS
CSCD
北大核心
2014年第12期2150-2154,共5页
Journal of Chinese Medicinal Materials
基金
国家级星火计划项目(2007EA790027)
广西科学研究与技术开发计划项目(桂科产09321002)
关键词
菲牛蛭
耗氧量
耗氧率
窒息点
Poecilobdella manillensis Lesson
Oxygen consumption
Oxygen consumption rate
Asphyxiation point
